Offline Install .NET Framework 3.5 On Windows Server 2012 R2

In this article, you will learn about the offline installation of .NET Framework 3.5 on Windows Server 2012 R2.

Introduction

 
Nowadays, there are lots of applications available that require .NET framework installed to run, including SQL Server. When trying to install .NET framework 3.5 on a computer running with Windows Server 2012 (R2) or 2008 (R2), you might receive the following error message.
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
In this article, we will see how to install .NET Framework 3.5 offline on a machine that has Windows Server 2012 R2. 
 

Offline Install .NET Framework 3.5 on Windows Server 2012 R2

 
First, open the Server Manager in Windows Server 2012 R2. Click "Add roles and features".
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
Click on "Next".
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
Then, select the "Installation Type" screen as Role-based or feature-based installation and click "Next".
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
Then, select the local server you want to install the .NET 3.5 Framework onto and click the "Next" button.
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
Select the "Server roles" page; do not select any role and just click on the "Next" button.
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
After that, select the "Features" screen and check .NET Framework 3.5 features and click "Next".
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
On the Confirmation page, you will get a warning “Do you need to specify an alternate source path? One or more installation selections are missing source files on the destination server.”
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
Here are the choices.
 
If your computer has an internet connection, just ignore this warning and click "Install". The wizard will try to connect to Microsoft’s online server and download the missing files from Windows Update.
 
If your computer has no internet connection, you must specify the alternate source path. Click the "Specify an alternate source path" link at the bottom of the above screenshot. Then, enter the path of the source files from Windows Server 2012 R2 installation CD.
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
In my example, it’s E:\sources\sxs, where E: is the drive letter of my installation media. Click "Okay" and then click "Install" to begin the installation
 
Once .NET Framework 3.5 has been installed, the screen will tell you about the successful installation.
 
Offline Install .NET Framework 3.5 On Windows Server 2012 R2
 
Click "Close" to exit the wizard. That’s it!